Add Yahoo as a preferred source to see more of our stories on Google. A rare, wave-like cloud formation blanketing the sky off the coast of Southern California left some people mesmerized — and ...

If you’ve ever looked up and seen the sky rippling like a stormy sea, you may have witnessed one of the most dramatic and rare cloud formations in the atmosphere: asperitas clouds. With their dark, ...

Houston, TX – Those clouds in my cover photo from Brent Bell are a magnificent sight! Asperitas clouds, for short (Undulatus asperatus), these have been photographed for years but didn’t get their ...

A rare formation called asperitas clouds appeared over the Santa Barbara Channel in Southern California on Nov. 15. NPS Emily Zivot Channel Islands National Park A rare, wave-like cloud formation ...